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render/vulkan: New staging buffer implementation

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Implement a ring-buffer that uses timeline points to track and release
allocated spans, upgrading the buffer if it fills and shrinking it if it
has been 4x too large for many collections.
This commit is contained in:
Kenny Levinsen 2026-04-12 17:10:40 +02:00
parent e8c03e9ce9
commit 1ec740692f
4 changed files with 267 additions and 155 deletions
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15
render/vulkan/pass.c
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@ -595,14 +595,7 @@ static bool render_pass_submit(struct wlr_render_pass *wlr_pass) {
free(render_wait);
struct wlr_vk_shared_buffer *stage_buf, *stage_buf_tmp;
wl_list_for_each_safe(stage_buf, stage_buf_tmp, &renderer->stage.buffers, link) {
if (stage_buf->allocs.size == 0) {
continue;
}
wl_list_remove(&stage_buf->link);
wl_list_insert(&stage_cb->stage_buffers, &stage_buf->link);
}
vulkan_stage_mark_submit(renderer, render_timeline_point);
if (!vulkan_sync_render_pass_release(renderer, pass)) {
wlr_log(WLR_ERROR, "Failed to sync render buffer");
@ -1056,13 +1049,13 @@ static bool create_3d_lut_image(struct wlr_vk_renderer *renderer,
size_t size = dim_len * dim_len * dim_len * bytes_per_block;
struct wlr_vk_buffer_span span = vulkan_get_stage_span(renderer,
size, bytes_per_block);
if (!span.buffer || span.alloc.size != size) {
if (!span.buffer || span.size != size) {
wlr_log(WLR_ERROR, "Failed to retrieve staging buffer");
goto fail_imageview;
}
float sample_range = 1.0f / (dim_len - 1);
char *map = (char *)span.buffer->cpu_mapping + span.alloc.start;
char *map = (char *)span.buffer->cpu_mapping + span.offset;
float *dst = (float *)map;
for (size_t b_index = 0; b_index < dim_len; b_index++) {
for (size_t g_index = 0; g_index < dim_len; g_index++) {
@ -1092,7 +1085,7 @@ static bool create_3d_lut_image(struct wlr_vk_renderer *renderer,
VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, VK_PIPELINE_STAGE_TRANSFER_BIT,
VK_ACCESS_TRANSFER_WRITE_BIT);
VkBufferImageCopy copy = {
.bufferOffset = span.alloc.start,
.bufferOffset = span.offset,
.imageExtent.width = dim_len,
.imageExtent.height = dim_len,
.imageExtent.depth = dim_len,